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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The maximum steam pressure in a Locomotive boiler is limited to

180 MN/m²
1.8 MN/m²
18 MN/m²
0.18 MN/m²

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Steam Boilers, Engines, Nozzles and Turbines
The velocity of whirl at outlet for an axial discharge turbine is

Zero
None of these
Minimum
Maximum

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Steam Boilers, Engines, Nozzles and Turbines
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

900 m/s
188 m/s
450 m/s
79 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The behavior of coal in a furnace is determined by

The content of ash and heating value
The proximate analysis
The exact analysis
The content of sulphur

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Steam Boilers, Engines, Nozzles and Turbines
Fusible plug for boilers is made of fusible metal containing tin, lead, and

Nickel
Aluminium
Bismuth
Copper

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Steam Boilers, Engines, Nozzles and Turbines
Primary air is the air used to

Provide air around burners for obtaining optimum combustion
Convert CO (formed in lower zone of furnace) into CO₂ at higher zone
Air delivered by forced draft fan
Transport and dry the coal

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